/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.pa165.languageschool1.servlet;

import com.pa165.languageschool.Student;
import java.io.IOException;
import java.io.PrintWriter;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.pa165.languageschool.StudentServiceLocal; 
import java.util.List;

/**
 *
 * @author Elena Medvedeva
 */
@WebServlet(name = "StudentServlet", urlPatterns = {"/StudentServlet"})
public class StudentServlet extends HttpServlet {

    @EJB
    private StudentServiceLocal studentService;
    
    private void printStudent(Student student, PrintWriter out){
        out.println("student: [ name=" + student.getName() + ", id=" + student.getId()+"]");
        out.println("<br/>");
        
    }
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        String name = "Alex";
        Student student1 = new Student();
        student1.setName(name);
        studentService.add(student1);
        Student student2 = new Student();
        student2.setName("Kiril");
        studentService.add(student2);
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet StudentServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet StudentServlet at " + request.getContextPath() + "</h1>");
            out.println("Students:<br/>");
//            Student res =  studentService.get(student2.getId());
//            out.println(res.getName());
            List<Student> res =  studentService.getAll();
            out.println("Amount="+ res.size());
            out.println(")))");
//            studentService.remove(student2);
//            out.println(")))");
           for(Student student:res){
                printStudent(student, out);
            }
           Student st =  studentService.get(student1.getId());
            out.println("Method get(id) test: " +st.getName());
            out.println("</body>");
            out.println("</html>");
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
